How are dangerous CT-scan?
Tomography (CT or CAT) scans help doctors recognize any of cancer of the kidney stones. But some doctors are concerned about the increase in these security procedures - in particular, which represents an increase over the risk of cancer. A CT-Scan packs a mega-dose of radiation - as many times one of 500 conventional X-ray machines. If your doctor orders a CT-scan for you or your child, we need twice?
Of course, say researchers after two recent studies, that alerts the increased risk of cancer in several CT-scan. In the first study of its kind, doctors at hospitals in Florida and Washington, DC, medical imaging assesses registrations 1243 patients randomly selected to calculate how many patients had all the radiation sustainable in the past five years. Although CT-scan was the largest source of radiation, other offenders including X-rays and mammograms. The results of the study, presented in May at the annual conference of the Society for Academic Emergency Medicine, have been embarrassing: The patient was an average of 45 millisieverts (mSv) of radiation. (The typical chest X-ray expeditions is 0.02 mSv of radiation.) And 12% of patients have exasperated more than double that amount - 100 mSv or more. “Our priority is the awareness that people are increasingly high doses of radiation and it is not harmless,” says Timothy Bullard, who lead author of the study and director of Medical Officer at Orlando Regional Medical Center. “We want people on the use of appropriate technology.”
“Adequate” is the keyword - as a study published in November last year review in the New England Journal of Medicine, that not less than one third of all CT-scan performed aux Etats - United are not necessary. The authors take issue with “perhaps 20 million adults and, most importantly, more than 1 million children per year in the USA [] irradiated are unnecessary.” Part of the problem, say the authors, is that patients are currently prescribed number, no need for CT-scan, a dilemma that could be prevented with better communication between doctors. “According to the same twice-CT Scan is ridiculous,” said David Brenner, lead review author and director of the Centre for radio research logic of the Columbia University Medical Center. “There is no excuse.” In one study the revision of stress, in patients with the CT-scan, 30% were in their third analysis, 7% have five or more and 4% had more than nine. In addition, debt: more and more doctors practicing defensive medicine. “This is a basic philosophy that you have a mistake, if you missed something,” says Bullard. “The goal is perfectly every time.” Plus, he noted, CT-scan have no immediate negative side effects. “They are fast, painless, and by far the patients with a sense of satisfaction that everything has been done.
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